Q1
Best network for CO4?
EE leads with 85/100 — driven by 70% 5G and 100% 4G in this mixed urban-rural part of Colchester.
CO4 DISTRICT · COLCHESTER
Best mobile network in CO4 Colchester postcode district
Comparing EE, Vodafone, O2 and Three across 5G · 4G · 3G for the CO4 postcode district in Colchester.
RESULT · CO4 · COLCHESTER
Coverage for CO4 district
★ BEST OPERATOR
EE
85/100
EE delivers the strongest coverage for the CO4 district in Colchester. Scored across 5G, 4G and 3G using the latest UK operator footprint data.
Full ranking — CO4
#1
EE
#2
Three
#3
O2
#4
Vodafone
Coverage analysis — CO4
According to Ofcom's December 2024 Connected Nations report, EE is the best choice for Colchester. In this mixed urban-rural area, EE achieves an overall coverage score of 85/100 — driven by strong 5G coverage (70%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
EE comfortably leads Three by 9 points overall. While Three reaches 55% on 5G and 96% on 4G in Colchester, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 76 and 72 respectively.
Best phone deals from EE
Because signal quality matters most when choosing a phone contract, here are the top EE contracts available now.
Explore the Colchester area
View full coverage analysis for the Colchester (CO) area, or enter any UK postcode in the scanner above for a personalised result.
Coverage FAQ — CO4
Q2
Is 5G available in CO4?
EE provides strong 5G coverage at 70%. Three follows at 55%.
Q3
Which network has the best 4G?
EE leads 4G too at 100%. Reliable 4G is critical in mixed urban-rural areas.
Q4
Is O2 worth considering?
O2 scores 76/100 in CO4 (53% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.